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SG6848DZ1

Fairchild Semiconductor
Part Number SG6848DZ1
Manufacturer Fairchild Semiconductor
Description Green-Mode PWM Controller
Published Mar 7, 2018
Detailed Description NOT RECOMMENDED FOR NEW DESIGNS SG6848x1 — Low Cost, Green-Mode PWM Controller for Flyback Converters SG6848x1 Low-Cos...
Datasheet PDF File SG6848DZ1 PDF File

SG6848DZ1
SG6848DZ1

Overview
NOT RECOMMENDED FOR NEW DESIGNS SG6848x1 — Low Cost, Green-Mode PWM Controller for Flyback Converters SG6848x1 Low-Cost, Green-Mode PWM Controller for Flyback Converters Features  Green-Mode PWM Controller  Low Startup Current: 5 μA  Low Operating Current: 3 mA  Programmable PWM Frequency  Peak-Current-Mode Operation  Leading-Edge Blanking  Built-in Synchronized Slope Compensation  Cycle-by-Cycle Current Limiting  Constant Output Power Limit  Gate Output Voltage Clamped at 15 V  Small SSOT-6 Package Applications General-purpose switched-mode power supplies (SMPS) and flyback power converters, such as:  Battery chargers for cellular phones, cordless phones, PDAs, digital cameras, and power tools  Power adapters for ink jet printers, video game consoles, and portable audio players  Open-frame SMPS for TV/DVD standby and auxiliary supplies, home appliances, and consumer electronics  Replacements for linear transformers and RCC SMPS  PC 5 V Standby Power Description This highly integrated PWM controller provides several enhancements to meet the low standby-power needs of low-power SMPS.
To minimize standby power consumption, the proprietary Green Mode provides offtime modulation to continuously decrease PWM frequency under light-load conditions.
Green Mode enables the power supply to meet even strict power conservation requirements.
The BiCMOS fabrication process enables reducing the startup current to 5 μA and the operating current to 3 mA.
As a result, a large startup resistance can be used.
Built-in synchronized slope compensation ensures the stability of peak-current-mode control.
Proprietary internal compensation provides a constant output power limit over a universal AC input range (90 VAC to 264 VAC).
Cycle-by-cycle current limiting ensures safe operation during short-circuits.
To protect the external power MOSFET from damage by supply over voltage, the SG6848X1 output driver is clamped at 15 V.
The SG6848X1 controllers can be used to improve ...


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